The A3’s barrel has a fixed A2 front sight and A2-style flash hider, which is attached via 1/2x28 threads; the second variant’s barrel is left full-diameter and features neither sights nor threading for the addition of a flash hider or a suppressor. The forged 7075-T6 aluminum receivers have Melonite-coated stainless steel bolt carrier groups with fixed extractors and fully functional charging handles, ejection port doors and brass deflectors.

The units also work with most AR handguards and free-float tubes. Included with each upper is a 10-round-capacity Black Dog Industries magazine. Price: $399-$425.